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2003 Ranger Trouble Codes (check engine light)

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Old 02-21-2010, 06:41 AM
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Question 2003 Ranger Trouble Codes (check engine light)

My friend has a 2003 Ranger Edge with 4.0 V6. The truck runs great, but the check engine light is on, so it won't pass inspection. I read the codes and got these two, P0171 and P0174. They indicate that both banks are lean. Does anyone know what might be causing this? Is it bad O2 sensors?
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Old 02-21-2010, 08:13 AM
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It's not the 02 sensors. Most likely a vacuum leak. Check out:

http://www.ford-trucks.com/forums/92...1-and-2-a.html

http://www.ford-trucks.com/forums/764774-01-ranger.html
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Old 02-22-2010, 06:31 AM
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Thanks for the tip. I'll take a look at those threads.
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Old 02-22-2010, 06:31 AM
 
 
 
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